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Table of Operating Times
Apparatus
Type
Maximum load
(without basket/trays)
Mechanical
air movement
215 / 225 / 255
3,0 kg
70 Min. (3 trays)
85 Min. (6 trays)
The given operating times are based on sterilizations
of medical instruments with trays or open containers.
Sterilization processes with closed containers need
longer operating times (see below).
Use containers from aluminium not stainless steel
container. Determine the additional time by a test
run. The safety margin should be 10%.
2.2. German VDE-requirements _________________________________________
In accordance with the valid VDE-requirements, this
autoclave is not suitable for areas with danger of
explosion.
It may be repaired only by the manufacturer or a
licensed service unit.
3. Attention! Warning
• Before opening the door switch off the appliance,
either using the main switch (6) or by turning the
time switch (5) to “0”. The signal lamp (4) is no
longer on.
• Be careful when loading and unloading the hot
sterilizer. Trays and sterilised items are hot!
• The ventilator only comes to rest some 45 secs
after switching off the appliance.
• During and after the sterilisation process some
parts of the housing may become very hot and
could cause burns. Danger!
• This appliance is not suitable for the sterilization
of liquids and for the warming up of rinse
solvents !
4. Attention! Misoperation
The hot-air sterilisszation method is fully accepted
(German DIN 58947). Nevertheless, this method is
still criticized because bacteriological examinations
about hot-air sterilizers still show a growth of testing
germs. A more detailed examination demonstrates
that this fact is mostly caused by misoperation.
5. Fault No. 1: Operating time too short!
The operator assumes the correct fact that a tem-
perature of 180°C for a period of 30 minutes takes
effect on the items to be sterilized. But the fault lies
in the exclusive observation of the thermometer. As
soon as the thermometer shows a temperature of
180°C, the operator wrongly begins to count the 30
minute period after which the sterilizer can be
switched off. This procedure only considers the pre-
heat time but not the equalization time. It is wrong to
assume that the killing time starts immediately after
the conclusion of the pre-heat time. Between killing
and pre-heat time, the operator has to take the
equalization time into account. This is the time
needed for the required temperature reaching all
places of the apparatus and of the items to be steril-
ized. Only after conclusion of the equalization time
the killing time begins which endures 30 minutes
(with 180°C). This period contains an extra charge
for safety (German DIN 58947, part 5).
All these conclusions of times are included in the
operating times given above (see table). The operat-
ing times are based on sterilizations of medical
instruments under use of trays or open containers.
Sterilization processes with closed containers need
longer operating times. If the items are sterilized in
closed cassettes made of aluminium with thin walls,
the operating times have to be elongated for 15
minutes. On principle, we recommend not to use
closed containers. For example, we have measured
a temperature of only 160°C inside of plates after 3½
hours!
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